一个Adapter+recycleview实现多种布局，区分布局中

Posted 2022-12-23 不良使

文章目录

• 🍓🍓简述
• 🍓🍓效果图
• 🍓🍓代码
• • 🥭🥭AllAdapter.java
  • 🥭🥭 FuritAdapter3.java
  • 🥭🥭MainActivity.java(主函数)
  • 🥭🥭FuritBean.java（对象的属性）
  • 🥭🥭msgcode.java(一些常量抽取出来)
  • 🥭🥭传值
• 🍓🍓xml布局
• • 🍗🍗activity_main.xml
  • 🍗🍗item1.xml
  • 🍗🍗item2.xml
  • 🍗🍗item3.xml
  • 🍗🍗recycle_item3.xml

🍓🍓简述

最近因为需要所以学习了一下recycleview,使用Adapter修饰器修饰，使用一个Adapter+recycleview实现多种布局，而不是之前的三个Adapter在同一个recycleview中实现三个布局。点击区分布局中的gridview的图片和姓名。

嗯~，算是之前的在同一个recycleview中实现三个不同布局的升级版吧。因为之前使用了三个Adapter【修饰器】，而这个只是用了一个Adapter【修饰器】

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🍓🍓效果图

动态图》》》

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🍓🍓代码

🥭🥭AllAdapter.java

package Adapter;

import android.app.Activity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.lifecycle.GenericLifecycleObserver;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.example.layout_test.MainActivity;
import com.example.layout_test.R;

import org.jetbrains.annotations.NotNull;

import java.util.List;

import domain.FuritBean;

import static domain.msgcode.TYPE_1;
import static domain.msgcode.TYPE_2;
import static domain.msgcode.TYPE_3;

public class AllAdapter extends RecyclerView.Adapter<AllAdapter.ViewHolder> 
    private List<FuritBean> mFruitList;
    private RecyclerView mRecycleView;
    private OnItemClickListener mOnItemClickListener;
    public int Position1,Position2;
    private View View;

    class ViewHolder extends RecyclerView.ViewHolder


        private final ImageView mfruitImage;
        private final TextView mfruitName;
        private final RecyclerView mRecycleView,mRecycleView2;

        public ViewHolder(@NonNull @NotNull View view) 
            super(view);
            mfruitImage=view.findViewById(R.id.mImg1);
            mfruitName=view.findViewById(R.id.mTv1);

            mRecycleView=view.findViewById(R.id.recycle_item);
            mRecycleView2=view.findViewById(R.id.recycle_item2);

    // todo 此处添加两个方法
    //添加一个OnItemClickListener接口，并且定义两个方法
    public interface OnItemClickListener
        void onClick(int position1,int position2,View view);
    

    //然后定义一个监听的方法，便于主类调用
    public void setOnItemListener(OnItemClickListener onItemListener)
        this.mOnItemClickListener = onItemListener;
    





    // 构造方法
    public AllAdapter(List<FuritBean> mFruitList) 
        this.mFruitList = mFruitList;
    

    // 获取布局类型，方便分类
    @Override
    public int getItemViewType(int position) 
        if (position ==1|| position ==4 || position==9)
            return TYPE_1;
        
        else if(position == TYPE_2)
            return TYPE_2;
        
        else 
            return TYPE_2;
        
    

//    @Override
//    public long getItemId(int position) 
//        return position;
//    

    //  根据布局类型，返回不同的view  ViewHolder
    @NonNull
    @NotNull
    @Override
    public AllAdapter.ViewHolder onCreateViewHolder(@NonNull @NotNull ViewGroup parent, int viewType) 
        View view = null;
        ViewHolder viewHolder = null;
        switch (viewType)
            case TYPE_1:
                view= LayoutInflater.from(parent.getContext()).inflate(R.layout.item1,parent,false);
                viewHolder=new ViewHolder(view);
                break;
            case TYPE_2:
                view=LayoutInflater.from(parent.getContext()).inflate(R.layout.item2,parent,false);
                viewHolder=new ViewHolder(view);


                break;
        
        return viewHolder;
    

    @Override
    public void onBindViewHolder(@NonNull @NotNull AllAdapter.ViewHolder holder, int position) 
        switch (getItemViewType(position))
            case TYPE_1:
                ViewHolder viewHolder=holder;

                GridLayoutManager gridLayoutManager=new GridLayoutManager(viewHolder.mRecycleView.getContext(),5);
                viewHolder.mRecycleView.setLayoutManager(gridLayoutManager);
                FuritAdapter3 furitAdapter3=new FuritAdapter3(mFruitList,position);

                /**
                 * 取得数据
                 */
                furitAdapter3.FSetonclick(new FuritAdapter3.FuritSetOnclick() 
                    @Override
                    public void clickGetData(int position, int position2,View view) 

                        mOnItemClickListener.onClick(position,position2,view);
                    
                );

                viewHolder.mRecycleView.setAdapter(furitAdapter3);

                break;

            case TYPE_2:
                ViewHolder viewHolder2=holder;
                FuritBean furit1=mFruitList.get(position);
                viewHolder2.mfruitImage.setImageResource(furit1.getImageId());
                viewHolder2.mfruitName.setText(furit1.getName());
                break;
            default:
                break;
        
    



    @Override
    public int getItemCount() 
        return mFruitList.size();
    

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🥭🥭 FuritAdapter3.java

package Adapter;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.example.layout_test.R;

import org.jetbrains.annotations.NotNull;

import java.util.List;

import domain.FuritBean;

public class FuritAdapter3 extends RecyclerView.Adapter<FuritAdapter3.ViewHolder> 
    private List<FuritBean> mFruitList;
    private FuritSetOnclick furitSetOnclick;
    private int position2;

    static class ViewHolder extends RecyclerView.ViewHolder
        private final ImageView mfruitImage;
        private final TextView mfruitName;

        public ViewHolder(@NonNull @NotNull View itemView) 
            super(itemView);
            mfruitImage= itemView.findViewById(R.id.mImg3);
            mfruitName = itemView.findViewById(R.id.mTv3);


        
    

    public FuritAdapter3(List<FuritBean> mFruitList, int position) 
        this.mFruitList = mFruitList;
        this.position2 = position;

    



    @NonNull
    @Override
    public FuritAdapter3.ViewHolder onCreateViewHolder(@NonNull @NotNull ViewGroup parent, int viewType) 
        View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_item3,parent,false);
        ViewHolder viewHolder=new ViewHolder(view);

        return viewHolder;
    

    @Override
    public void onBindViewHolder(@NonNull @NotNull FuritAdapter3.ViewHolder holder, int position) 
        FuritBean furit=mFruitList.get(position);
        holder.mfruitImage.setImageResource(furit.getImageId());
        holder.mfruitName.setText(furit.getName());


        holder.mfruitImage.setOnClickListener(new View.OnClickListener() 
            @Override
            public void onClick(View view) 
                furitSetOnclick.clickGetData(position2,position,holder.mfruitImage);
            
        );
        holder.mfruitName.setOnClickListener(new View.OnClickListener() 
            @Override
            public void onClick(View view) 
                furitSetOnclick.clickGetData(position2,position,holder.mfruitName);
            
        );
    

    @Override
    public int getItemCount() 
        return mFruitList.size();
    


    //  定义一个监听接口，里面有两个方法
    public interface FuritSetOnclick
        void clickGetData(int position,int position2,View view);
    

    //给监听一个构造函数，提供给  MainActivity  调用
    public void FSetonclick(FuritSetOnclick furitSetOnclick)
        this.furitSetOnclick=furitSetOnclick;
    

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🥭🥭MainActivity.java(主函数)

package Adapter;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.example.layout_test.R;

import org.jetbrains.annotations.NotNull;

import java.util.List;

import domain.FuritBean;

public class FuritAdapter3 extends RecyclerView.Adapter<FuritAdapter3.ViewHolder> 
    private List<FuritBean> mFruitList;
    private FuritSetOnclick furitSetOnclick;
    private int position2;

    static class ViewHolder extends RecyclerView.ViewHolder
        private final ImageView mfruitImage;
        private final TextView mfruitName;

        public ViewHolder(@NonNull @NotNull View itemView) 
            super(itemView);
            mfruitImage= itemView.findViewById(R.id.mImg3);
            mfruitName = itemView.findViewById(R.id.mTv3);


        
    

    public FuritAdapter3(List<FuritBean> mFruitList, int position) 
        this.mFruitList = mFruitList;
        this.position2 = position;

    



    @NonNull
    @Override
    public FuritAdapter3.ViewHolder onCreateViewHolder(@NonNull @NotNull ViewGroup parent, int viewType) 
        View view= LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_item3,parent,false);
        ViewHolder viewHolder=new ViewHolder(view);


        return viewHolder;
    

    @Override
    public void onBindViewHolder(@NonNull @NotNull FuritAdapter3.ViewHolder holder, int position) 
        FuritBean furit=mFruitList.get(position);
        holder.mfruitImage.setImageResource(furit.getImageId());
        holder.mfruitName.setText(furit.getName());


        holder.mfruitImage.setOnClickListener(new View.OnClickListener() 
            @Override
            public void onClick(View view) 
                furitSetOnclick.clickGetData(position2,position,holder.mfruitImage);
            
        );
        holder.mfruitName.setOnClickListener(new View.OnClickListener() 
            @Override
            public void onClick(View view) 
                furitSetOnclick.clickGetData(position2,position,holder.mfruitName);
            
        );
    

    @Override
    public int getItemCount() 
        return mFruitList.size();
    


    //  定义一个监听接口，里面有两个方法
    public interface FuritSetOnclick
        void clickGetData(int position,int position2,View view);
    

    //给监听一个构造函数，提供给  MainActivity  调用
    public void FSetonclick(FuritSetOnclick furitSetOnclick)
        this.furitSetOnclick=furitSetOnclick;
    

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🥭🥭FuritBean.java（对象的属性）

package domain;

public class FuritBean 
    private String name;
    private int ImageId;

    public String getName(以上是关于一个Adapter+recycleview实现多种布局，区分布局中的主要内容，如果未能解决你的问题，请参考以下文章
 
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